Examples with SyncResponseExecutor org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor used on opensource projects

Example 1 with SyncResponseExecutor

use of org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor in project incubator-servicecomb-java-chassis by apache.

the class LoadbalanceHandler method sendWithRetry.

private void sendWithRetry(Invocation invocation, AsyncResponse asyncResp, final LoadBalancer chosenLB) throws Exception {
    long time = System.currentTimeMillis();
    // retry in loadbalance, 2.0 feature
    final int currentHandler = invocation.getHandlerIndex();
    final SyncResponseExecutor orginExecutor;
    final Executor newExecutor;
    if (invocation.getResponseExecutor() instanceof SyncResponseExecutor) {
        orginExecutor = (SyncResponseExecutor) invocation.getResponseExecutor();
        newExecutor = new Executor() {

            @Override
            public void execute(Runnable command) {
                // retry的场景，对于同步调用, 同步调用的主线程已经被挂起，无法再主线程中进行重试;
                // 重试也不能在网络线程（event-loop）中进行，未被保护的阻塞操作会导致网络线程挂起
                RETRY_POOL.submit(command);
            }
        };
        invocation.setResponseExecutor(newExecutor);
    } else {
        orginExecutor = null;
        newExecutor = null;
    }
    ExecutionListener<Invocation, Response> listener = new ExecutionListener<Invocation, Response>() {

        @Override
        public void onExecutionStart(ExecutionContext<Invocation> context) throws AbortExecutionException {
        }

        @Override
        public void onStartWithServer(ExecutionContext<Invocation> context, ExecutionInfo info) throws AbortExecutionException {
        }

        @Override
        public void onExceptionWithServer(ExecutionContext<Invocation> context, Throwable exception, ExecutionInfo info) {
            LOGGER.error("onExceptionWithServer msg {}; server {}", exception.getMessage(), context.getRequest().getEndpoint());
        }

        @Override
        public void onExecutionSuccess(ExecutionContext<Invocation> context, Response response, ExecutionInfo info) {
            if (orginExecutor != null) {
                orginExecutor.execute(() -> {
                    asyncResp.complete(response);
                });
            } else {
                asyncResp.complete(response);
            }
        }

        @Override
        public void onExecutionFailed(ExecutionContext<Invocation> context, Throwable finalException, ExecutionInfo info) {
            if (orginExecutor != null) {
                orginExecutor.execute(() -> {
                    asyncResp.consumerFail(finalException);
                });
            } else {
                asyncResp.consumerFail(finalException);
            }
        }
    };
    List<ExecutionListener<Invocation, Response>> listeners = new ArrayList<>(0);
    listeners.add(listener);
    ExecutionContext<Invocation> context = new ExecutionContext<>(invocation, null, null, null);
    LoadBalancerCommand<Response> command = LoadBalancerCommand.<Response>builder().withLoadBalancer(chosenLB).withServerLocator(invocation).withRetryHandler(ExtensionsManager.createRetryHandler(invocation.getMicroserviceName())).withListeners(listeners).withExecutionContext(context).build();
    Observable<Response> observable = command.submit(new ServerOperation<Response>() {

        public Observable<Response> call(Server s) {
            return Observable.create(f -> {
                try {
                    ((CseServer) s).setLastVisitTime(time);
                    chosenLB.getLoadBalancerStats().incrementNumRequests(s);
                    // for retry
                    invocation.setHandlerIndex(currentHandler);
                    invocation.setEndpoint(((CseServer) s).getEndpoint());
                    invocation.next(resp -> {
                        if (resp.isFailed()) {
                            LOGGER.error("service call error, msg is {}, server is {} ", ((Throwable) resp.getResult()).getMessage(), s);
                            chosenLB.getLoadBalancerStats().incrementSuccessiveConnectionFailureCount(s);
                            ((CseServer) s).incrementContinuousFailureCount();
                            f.onError(resp.getResult());
                        } else {
                            chosenLB.getLoadBalancerStats().incrementActiveRequestsCount(s);
                            ((CseServer) s).clearContinuousFailure();
                            chosenLB.getLoadBalancerStats().noteResponseTime(s, (System.currentTimeMillis() - time));
                            f.onNext(resp);
                            f.onCompleted();
                        }
                    });
                } catch (Exception e) {
                    LOGGER.error("execution error, msg is " + e.getMessage());
                    f.onError(e);
                }
            });
        }
    });
    observable.subscribe(response -> {
    }, error -> {
    }, () -> {
    });
}

Example 2 with SyncResponseExecutor

use of org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor in project incubator-servicecomb-java-chassis by apache.

the class TestConsumer method testReferenceConfig.

@Test
public void testReferenceConfig() throws InterruptedException {
    Map<String, String> oMap = new ConcurrentHashMap<>();
    oMap.put("test1", "value1");
    RegisterManager<String, String> oManager = new RegisterManager<>("test");
    oManager.register("test1", "value1");
    SyncResponseExecutor oExecutor = new SyncResponseExecutor();
    oExecutor.execute(new Runnable() {

        @Override
        public void run() {
            oExecutor.setResponse(Response.succResp("success"));
        }
    });
    Assert.assertEquals(true, oExecutor.waitResponse().isSuccessed());
}

Example 3 with SyncResponseExecutor

use of org.apache.servicecomb.core.provider.consumer.SyncResponseExecutor in project incubator-servicecomb-java-chassis by apache.

the class TestSyncResponseExecutor method testSyncResponseExecutor.

@Test
public void testSyncResponseExecutor() {
    SyncResponseExecutor executor = new SyncResponseExecutor();
    Runnable cmd = Mockito.mock(Runnable.class);
    Response response = Mockito.mock(Response.class);
    executor.execute(cmd);
    executor.setResponse(response);
    try {
        Response responseValue = executor.waitResponse();
        Assert.assertNotNull(responseValue);
    } catch (Exception e) {
        Assert.assertNotNull(e);
    }
}